Laptop Motherboard Repair Test & Troubleshoot 3.3VALW 5VALW Circuits with a Multimeter

[@kenancakir9166]

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[@electronicsrepairbasics_erb]

Wow, I'm truly honored by your kind words! It means a lot to know my content resonates with you. Thank you for your support, and I hope you enjoy watching all the videos!

[@yousafzain3076]

I am yousaf from pakistan. You are the person I am looking from among 8.7 billion people.Thank for you everything. I was the first time I saw your video and I learned a lot from it, thank you

[@electronicsrepairbasics_erb]

Thank you so much, Yousaf! I'm truly honored by your kind words. I'm glad my video could help you, and I appreciate your support. Feel free to reach out if you have any questions or need further assistance. I'm here to help

[@playharder1435]

Finally, one that actually teaches. God bless you 🙏🏾

[@electronicsrepairbasics_erb]

Thank you

[@yassinesebabi3255]

frankly because of your races I started to learn English your tutorials help me a lot to understand many things on the distribution. Thank you very much for the effort you make for us 🙏

[@electronicsrepairbasics_erb]

Cool, thanks!

[@frankncube]

Sir you are very very best electronics teacher I have ever met..Thank you we are learning and its very easy to understand your staff , you make it so simple to digest.

[@Panyatimay]

Thank you, teacher. I always watch your lessons. Wishing you success

[@electronicsrepairbasics_erb]

Thank you! 😃

[@rainbow-vp4df]

Thank you sir. One of the best vlog for trouble shooting mother board.

[@Engjaawo]

Congratulations bro your tireless effort in ur teaching

[@electronicsrepairbasics_erb]

Thank you so much for your kind words. I truly appreciate your support and recognition of my efforts. I'm committed to providing valuable content, and it's great to know that it resonates with you. Stay tuned for more exciting tutorials

[@natnaelsintayehu7716]

It was the first time I saw your video and I learned a lot from it, thank you 🙏

[@electronicsrepairbasics_erb]

It's my pleasure, thank you

[@mime4331]

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[@electronicsrepairbasics_erb]

I appreciate that!

[@dzabakwesi2213]

Excellent presentation and thanks for the knowledge

[@electronicsrepairbasics_erb]

Thank you! I'm glad you found the presentation helpful and informative.

[@javiralusiiba6661]

Good work sir. You helped to understand schematics. Big up

[@electronicsrepairbasics_erb]

You are welcome

[@teodybalisacan1457]

i’m a hardware lover and i love your presentation. i’m from Phils.

[@electronicsrepairbasics_erb]

It's great to hear from a fellow hardware enthusiast. I'm glad you enjoyed the presentation. If you have any questions or need more insights, feel free to reach out. Happy learning and keep up the passion for hardware

[@francismannion7075]

Thank you very much for an excellent lesson. It was very helpful like all of your lessons.

[@electronicsrepairbasics_erb]

Glad it was helpful!, thank you @francismannion7075

[@Arturochirinoscruz]

Excelente video, saludos desde Perú 🇵🇪

[@electronicsrepairbasics_erb]

Thank you

[@heichfor461]

You are the best.thank you as being said it changes my understanding of the mother board.precisely clear explanation.

[@electronicsrepairbasics_erb]

Thank you

[@SzaryVilko]

Wow how did u fast grow ur channel :D Grat!

[@electronicsrepairbasics_erb]

Thank you Bro

[@AminulIslam-qk9sp]

I am Aminul from Bangladesh, You are the best tutor ❤ I have learned from you, I can now read schematic diagram and all things aboute motherboard repair. Thank you so much for the sharing this technology you are my Genius BOSS🎉

[@electronicsrepairbasics_erb]

Thank you so much, Aminul, for your kind words. I'm truly honored to be part of your learning journey. It's wonderful to hear that you can now read schematic diagrams and understand motherboard repair. Keep up the great work, and if you ever need more guidance or have any questions, don't hesitate to reach out. I'm here to support you, you're doing amazing.

[@kuangalenga154]

Thanks for this video..hope you will make one more for advance motherboard

[@electronicsrepairbasics_erb]

I will try my best

[@mohdkhairul4341]

Thanks a lot.. You teach it everything for everyone

[@electronicsrepairbasics_erb]

It's my pleasure

[@mrta.]

First of all, thank you very much for this wonderful video, teacher, but I am looking forward to your VGS video, thank you very much for both your multimeter and your analysis.😍

[@electronicsrepairbasics_erb]

Thank you so much for your kind words! I'm glad you enjoyed the video and found the multimeter and analysis helpful. I'll definitely work on creating a VGS video soon-stay tuned! 😍

[@mrta.]

@@electronicsrepairbasics_erb Thank you very much sir😊

[@yassinesebabi3255]

Frankly, I'm the one who should be thanking you.

[@electronicsrepairbasics_erb]

You are very welcome

[@gilbert1321]

Sir..thank you very much your knowledge to share with us..and your voice is so clear i understand what your voice out. Always watching your vedios .from philippnes..thank you..God Bless..

[@electronicsrepairbasics_erb]

Thanks and welcome

[@Neomatrix452]

good teacher thanks...

[@electronicsrepairbasics_erb]

So nice of you, stay tuned for more coming videos

[@ishuli6107]

good tutorial! what is b plus?

[@electronicsrepairbasics_erb]

Thank you, means the main voltage power rail 19V in our case

[@ishuli6107]

thank you! i can't wait power rails for desktop motherboard

[@stephenkayode379]

Thanks for the teaching sir, more video sir❤. God bless you ❤😊

[@electronicsrepairbasics_erb]

Thank you so much for your kind words and support! I'm glad you found the video helpful. More content is definitely on the way, so stay tuned! Blessings to you as well! ❤

[@stephenkayode379]

@@electronicsrepairbasics_erb Amen

[@electronicsrepairbasics_erb]

Stay tuned bro

[@victornjoki3905]

Hello teacher. Is it a must to remove the CPU to isolate the motherboard when testing for the B+, 3.3v, 5v circuits? And if so, which method do you use to remove the CPU? Many thanks and much appreciation to you sir for your hard work and determination to teach your expertise.

[@emmanuelmichael7071]

thanks for informative video, one more qn, how do i get the circuit diagram for specific motherboard

[@romymallari9133]

Thanks for this video. Very informative... I am really interested in repairing laptops but I am totally blind when it comes to board level repair... Btw, where could I probably get free schematics?

[@electronicsrepairbasics_erb]

Thank you for your feedback! I’m glad you found the video informative. For board-level repairs, understanding schematics is a crucial step, and it's great that you're interested in diving into that. Keep up the interest, and feel free to ask if you have more questions

[@babyboyvlog4666]

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[@C5films]

This is excellent. HOW do you check the 3V and 5V always voltages? Do you need the pin outs of the IC to find which pin the voltages are on? Many thanks.

[@electronicsrepairbasics_erb]

Yes, correct

[@nenekniandut1]

tysm northbridgefix, may god bless you...............................

[@electronicsrepairbasics_erb]

My pleasure

[@erictech25]

nice job boss

[@electronicsrepairbasics_erb]

Thanks

[@compuprodurban1954]

Hi sir I have a blown Rb491d shotky diode is there any way to bypass this or use another diode

[@electronicsrepairbasics_erb]

Substitute with Equivalent Diode: You can replace the RB491D with another Schottky diode that has similar specifications. Check the voltage rating and current capacity to find a suitable replacement. The RB491D typically has a forward voltage of around 0.2V and a current rating of 1A, so look for a Schottky diode with similar values (e.g., 1N5819 or SS14 as alternatives). Bypass (Not Recommended): Bypassing the diode is not recommended as it serves a specific purpose in regulating current or protecting the circuit. Without the diode, you risk damaging other components

[@abnhainn7944]

Super .dankeschon

[@electronicsrepairbasics_erb]

Thank you too

[@tedanzd]

as a beginner, i'm trying to repair a motherboard, asus h110m-d, dead looking for the a schematics to ease the troubleshooting, most of the terminal in the atx jack is shorted, i dont know where to begin...

[@electronicsrepairbasics_erb]

As a beginner, you're on the right track by looking for the schematics! For the ASUS H110M-D, if most terminals in the ATX jack are shorted, I recommend starting by checking the 12V, 5V, and 3.3V rails for any obvious shorts. Disconnect all peripherals and components, like the RAM and CPU, to isolate the motherboard. Then, using a multimeter in continuity mode, check each power rail for shorts to ground. Often, a faulty capacitor or MOSFET might be the cause. If you don’t have the schematics, you can search for common circuit layouts online or use a similar model’s schematics as a reference. Good luck, and feel free to ask if you need more help

[@samsongithinji1631]

Are u setting your multimeter into DC or Ac

[@electronicsrepairbasics_erb]

Into DC of course

[@samsongithinji1631]

@@electronicsrepairbasics_erb thanks sir

[@electronicsrepairbasics_erb]

Thank you too

[@joshua6095]

In case +3V or +5V is missing how can you fix it. Thanks 🙏

[@electronicsrepairbasics_erb]

If the +3V or +5V is missing, here’s a systematic approach to diagnose and fix the issue: Check Power Supply: Ensure the power supply is functioning correctly. Use a multimeter to measure the output of the power supply and verify that it is providing the correct voltage B+. Inspect Voltage Regulators: check if they are operating properly. A faulty regulator could cause the absence of voltage. Replace any damaged voltage regulator ICs. Examine Capacitors and Diodes: Look for blown or damaged capacitors, particularly near the power supply section. Faulty capacitors can lead to power loss. Check diodes in the rectifier circuit (if applicable) to ensure they aren't shorted or open. Trace the Circuit Path: Use a schematic diagram to trace the power supply circuit from the source to the affected area. Check continuity with a multimeter to find where the voltage drop occurs. Check for Short Circuits: Look for any short circuits or burnt components that could be pulling down the voltage. This may include checking MOSFETs or transistors that are connected to the power line. Inspect Connectors and Solder Joints: Ensure that connectors and solder joints are intact and not loose or cold-soldered. Reflow or resolder joints if necessary. Replace Faulty Components: If individual components like resistors, diodes, or ICs are identified as faulty, replace them with appropriate equivalents. By following this methodical troubleshooting approach, you should be able to locate and fix the issue causing the missing +3V or +5V.

[@joshua6095]

@@electronicsrepairbasics_erb Thank you very much

[@electronicsrepairbasics_erb]

My pleasure

[@acalat]

If we don't don't have 19 volt in the 3.3 and 5 always inductor. What shall we do??? Please help

[@electronicsrepairbasics_erb]

If you're not getting 19V in the 3.3V and 5V Always circuits, first check for any shorts on the input side of the power rail. Then, verify that the DC-in MOSFETs are working correctly and passing the voltage through. If there's no issue there, check the fuse, capacitors, and other components in the power path. You can also inspect the charging IC, as it controls the power distribution. Make sure the power adapter is functioning properly as well. If all these components check out, it may be necessary to trace the signal and test individual components further. Hope this helps!

[@acalat]

@@electronicsrepairbasics_erb awesome thanks 🙏

[@electronicsrepairbasics_erb]

Thank you

[@SamDaniel-p2j]

Boss please,i have hp laptop is turning on, but no display and the fan spin like two seconds and stop

[@electronicsrepairbasics_erb]

Hi there, Here are some steps you can try: Check the Power Supply: Ensure the laptop is properly connected to a working power source. Perform a Hard Reset: Disconnect the power adapter, remove the battery (if possible), and hold down the power button for about 15-30 seconds. Then, reconnect the power adapter and try turning the laptop on again. Inspect RAM: Sometimes, loose or faulty RAM can cause display issues. Try reseating the RAM modules or testing with different RAM sticks if available. Check for External Display: Connect the laptop to an external monitor or TV to see if the issue is with the laptop's screen. Examine the Laptop’s Components: Look for loose cables or components inside the laptop. If you’re comfortable doing so, you can open the laptop to check. Feel free to update me on your progress or if you have any further questions! Good luck

[@SamDaniel-p2j]

Thanks 🙏, the person that gave me the laptop disassemble the laptop,I was the one that assembled it,I plug in charger I read the mosfet it gave me 19v, I read the battery terminal it gave me 3.3.if I press the power button it bring light on the power,I on it and off it.when ever press the power button it will make a sound like it will start the fan will spin and stop.if I plugged charger it shows charging light.I clean the ram and install it still ,I ask the person he told me he removed the ram a and kept it for long time

[@SamDaniel-p2j]

I am a phone technician,I don't know anything about fixing of laptop.Thank you for your support sir

[@SamDaniel-p2j]

I will study your video,It will really help me

[@Giorgi-1881]

👍👍👍

[@Pravinsahu-qf9bb]

Can you explain the circuit of a normal pad calculator? Each and every thing in separating parts in single video. I was searching that how it works. But didn't got the video. I am expecting from you. Please 🙏

[@electronicsrepairbasics_erb]

Thank you for your request! A detailed breakdown of a pad calculator's circuit is a great idea for a video. I'll definitely consider creating one that explains each component, such as the power supply, microcontroller, display, and keypad, in a step-by-step manner. Stay tuned, and I’ll do my best to provide the content you're looking for! Thanks for your support!

[@steamtrainguy]

👌🙏

[@electronicsrepairbasics_erb]

Welcome

[@namenodisplay9160]

I really want to learn but I'm not very good at English 😢😢

[@electronicsrepairbasics_erb]

What language do you understand brother?

[@namenodisplay9160]

@electronicsrepairbasics_erb Indonesia sir. can you add Indonesian audio? it's hard to learn if you watch while reading the video caption

[@emilnesrullayev539]

👍👍👍

[@electronicsrepairbasics_erb]

Thank you